/* attach routine */
void
dmattach(int n)
{
int error;
error = config_cfattach_attach(dm_cd.cd_name, &dm_ca);
if (error) {
aprint_error("%s: unable to register cfattach\n",
dm_cd.cd_name);
} else {
dm_doinit();
}
}
/* New module handle routine */
static int
dm_modcmd(module_t mod, int cmd, void *unused)
{
int error, bmajor, cmajor;
error = 0;
bmajor = -1;
cmajor = -1;
switch (cmd) {
case MOD_LOAD:
dm_doinit();
kprintf("Device Mapper version %d.%d.%d loaded\n",
DM_VERSION_MAJOR, DM_VERSION_MINOR, DM_VERSION_PATCHLEVEL);
break;
case MOD_UNLOAD:
/*
* Disable unloading of dm module if there are any devices
* defined in driver. This is probably too strong we need
* to disable auto-unload only if there is mounted dm device
* present.
*/
if (dm_dev_counter > 0)
return EBUSY;
error = dmdestroy();
if (error)
break;
kprintf("Device Mapper unloaded\n");
break;
default:
break;
}
return error;
}
/* New module handle routine */
static int
dm_modcmd(modcmd_t cmd, void *arg)
{
#ifdef _MODULE
int error, bmajor, cmajor;
error = 0;
bmajor = -1;
cmajor = -1;
switch (cmd) {
case MODULE_CMD_INIT:
error = config_cfdriver_attach(&dm_cd);
if (error)
break;
error = config_cfattach_attach(dm_cd.cd_name, &dm_ca);
if (error) {
aprint_error("%s: unable to register cfattach\n",
dm_cd.cd_name);
return error;
}
error = devsw_attach(dm_cd.cd_name, &dm_bdevsw, &bmajor,
&dm_cdevsw, &cmajor);
if (error == EEXIST)
error = 0;
if (error) {
config_cfattach_detach(dm_cd.cd_name, &dm_ca);
config_cfdriver_detach(&dm_cd);
break;
}
dm_doinit();
break;
case MODULE_CMD_FINI:
/*
* Disable unloading of dm module if there are any devices
* defined in driver. This is probably too strong we need
* to disable auto-unload only if there is mounted dm device
* present.
*/
if (dm_dev_counter > 0)
return EBUSY;
error = dmdestroy();
if (error)
break;
config_cfdriver_detach(&dm_cd);
devsw_detach(&dm_bdevsw, &dm_cdevsw);
break;
case MODULE_CMD_STAT:
return ENOTTY;
default:
return ENOTTY;
}
return error;
#else
return ENOTTY;
#endif
}
